Junior Seau Smiling at Charity Event Days Before Death
updated 05/03/2012 AT 01:15 PM EDT
•originally published 05/03/2012 AT 12:00 PM EDT
A photo from the 18th Annual 911 for Kids Celebrity ProAm Classic, held at the St. Regis Monarch Beach Golf Links in Dana Point, Calif., shows Seau in a black polo shirt and cap, smiling and apparently relaxed with Karma Tequila co-founder Gary Eisenberger and an unidentified woman.
Event reps say the NFL star was jovial and joked around with other guests as he sipped tequila.
Seau, 43, was deeply involved in charity work, having donated nearly $4 million for services and scholarships to children and young adults. 911 for Kids is an organization dedicated to teaching children about the seriousness of calling 911 and how to properly communicate with emergency operators.
As his friends and family grieve his death, police are investigating it as a suicide.